From a4d0c6e0503562d4cc8f9f6d02d84d7b32583b15 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Tue, 3 Dec 2013 07:52:33 +0100
Subject: mpegvideo: move dct_unquantize functions up to avoid forward
 declarations

---
 libavcodec/mpegvideo.c | 451 ++++++++++++++++++++++++-------------------------
 1 file changed, 218 insertions(+), 233 deletions(-)

(limited to 'libavcodec')

diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 6b3a6ee31a..0003aedc81 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -42,21 +42,6 @@
 #include "thread.h"
 #include <limits.h>
 
-static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
-                                   int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
-                                   int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
-                                   int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
-                                   int16_t *block, int n, int qscale);
-static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
-                                   int16_t *block, int n, int qscale);
-static void dct_unquantize_h263_intra_c(MpegEncContext *s,
-                                  int16_t *block, int n, int qscale);
-static void dct_unquantize_h263_inter_c(MpegEncContext *s,
-                                  int16_t *block, int n, int qscale);
-
 static const uint8_t ff_default_chroma_qscale_table[32] = {
 //   0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15
      0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
@@ -123,6 +108,224 @@ const enum AVPixelFormat ff_pixfmt_list_420[] = {
     AV_PIX_FMT_NONE
 };
 
+static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
+                                   int16_t *block, int n, int qscale)
+{
+    int i, level, nCoeffs;
+    const uint16_t *quant_matrix;
+
+    nCoeffs= s->block_last_index[n];
+
+    if (n < 4)
+        block[0] = block[0] * s->y_dc_scale;
+    else
+        block[0] = block[0] * s->c_dc_scale;
+    /* XXX: only mpeg1 */
+    quant_matrix = s->intra_matrix;
+    for(i=1;i<=nCoeffs;i++) {
+        int j= s->intra_scantable.permutated[i];
+        level = block[j];
+        if (level) {
+            if (level < 0) {
+                level = -level;
+                level = (int)(level * qscale * quant_matrix[j]) >> 3;
+                level = (level - 1) | 1;
+                level = -level;
+            } else {
+                level = (int)(level * qscale * quant_matrix[j]) >> 3;
+                level = (level - 1) | 1;
+            }
+            block[j] = level;
+        }
+    }
+}
+
+static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
+                                   int16_t *block, int n, int qscale)
+{
+    int i, level, nCoeffs;
+    const uint16_t *quant_matrix;
+
+    nCoeffs= s->block_last_index[n];
+
+    quant_matrix = s->inter_matrix;
+    for(i=0; i<=nCoeffs; i++) {
+        int j= s->intra_scantable.permutated[i];
+        level = block[j];
+        if (level) {
+            if (level < 0) {
+                level = -level;
+                level = (((level << 1) + 1) * qscale *
+                         ((int) (quant_matrix[j]))) >> 4;
+                level = (level - 1) | 1;
+                level = -level;
+            } else {
+                level = (((level << 1) + 1) * qscale *
+                         ((int) (quant_matrix[j]))) >> 4;
+                level = (level - 1) | 1;
+            }
+            block[j] = level;
+        }
+    }
+}
+
+static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
+                                   int16_t *block, int n, int qscale)
+{
+    int i, level, nCoeffs;
+    const uint16_t *quant_matrix;
+
+    if(s->alternate_scan) nCoeffs= 63;
+    else nCoeffs= s->block_last_index[n];
+
+    if (n < 4)
+        block[0] = block[0] * s->y_dc_scale;
+    else
+        block[0] = block[0] * s->c_dc_scale;
+    quant_matrix = s->intra_matrix;
+    for(i=1;i<=nCoeffs;i++) {
+        int j= s->intra_scantable.permutated[i];
+        level = block[j];
+        if (level) {
+            if (level < 0) {
+                level = -level;
+                level = (int)(level * qscale * quant_matrix[j]) >> 3;
+                level = -level;
+            } else {
+                level = (int)(level * qscale * quant_matrix[j]) >> 3;
+            }
+            block[j] = level;
+        }
+    }
+}
+
+static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
+                                   int16_t *block, int n, int qscale)
+{
+    int i, level, nCoeffs;
+    const uint16_t *quant_matrix;
+    int sum=-1;
+
+    if(s->alternate_scan) nCoeffs= 63;
+    else nCoeffs= s->block_last_index[n];
+
+    if (n < 4)
+        block[0] = block[0] * s->y_dc_scale;
+    else
+        block[0] = block[0] * s->c_dc_scale;
+    quant_matrix = s->intra_matrix;
+    for(i=1;i<=nCoeffs;i++) {
+        int j= s->intra_scantable.permutated[i];
+        level = block[j];
+        if (level) {
+            if (level < 0) {
+                level = -level;
+                level = (int)(level * qscale * quant_matrix[j]) >> 3;
+                level = -level;
+            } else {
+                level = (int)(level * qscale * quant_matrix[j]) >> 3;
+            }
+            block[j] = level;
+            sum+=level;
+        }
+    }
+    block[63]^=sum&1;
+}
+
+static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
+                                   int16_t *block, int n, int qscale)
+{
+    int i, level, nCoeffs;
+    const uint16_t *quant_matrix;
+    int sum=-1;
+
+    if(s->alternate_scan) nCoeffs= 63;
+    else nCoeffs= s->block_last_index[n];
+
+    quant_matrix = s->inter_matrix;
+    for(i=0; i<=nCoeffs; i++) {
+        int j= s->intra_scantable.permutated[i];
+        level = block[j];
+        if (level) {
+            if (level < 0) {
+                level = -level;
+                level = (((level << 1) + 1) * qscale *
+                         ((int) (quant_matrix[j]))) >> 4;
+                level = -level;
+            } else {
+                level = (((level << 1) + 1) * qscale *
+                         ((int) (quant_matrix[j]))) >> 4;
+            }
+            block[j] = level;
+            sum+=level;
+        }
+    }
+    block[63]^=sum&1;
+}
+
+static void dct_unquantize_h263_intra_c(MpegEncContext *s,
+                                  int16_t *block, int n, int qscale)
+{
+    int i, level, qmul, qadd;
+    int nCoeffs;
+
+    assert(s->block_last_index[n]>=0);
+
+    qmul = qscale << 1;
+
+    if (!s->h263_aic) {
+        if (n < 4)
+            block[0] = block[0] * s->y_dc_scale;
+        else
+            block[0] = block[0] * s->c_dc_scale;
+        qadd = (qscale - 1) | 1;
+    }else{
+        qadd = 0;
+    }
+    if(s->ac_pred)
+        nCoeffs=63;
+    else
+        nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
+
+    for(i=1; i<=nCoeffs; i++) {
+        level = block[i];
+        if (level) {
+            if (level < 0) {
+                level = level * qmul - qadd;
+            } else {
+                level = level * qmul + qadd;
+            }
+            block[i] = level;
+        }
+    }
+}
+
+static void dct_unquantize_h263_inter_c(MpegEncContext *s,
+                                  int16_t *block, int n, int qscale)
+{
+    int i, level, qmul, qadd;
+    int nCoeffs;
+
+    assert(s->block_last_index[n]>=0);
+
+    qadd = (qscale - 1) | 1;
+    qmul = qscale << 1;
+
+    nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
+
+    for(i=0; i<=nCoeffs; i++) {
+        level = block[i];
+        if (level) {
+            if (level < 0) {
+                level = level * qmul - qadd;
+            } else {
+                level = level * qmul + qadd;
+            }
+            block[i] = level;
+        }
+    }
+}
+
 static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
                               int (*mv)[2][4][2],
                               int mb_x, int mb_y, int mb_intra, int mb_skipped)
@@ -2286,224 +2489,6 @@ void ff_mpeg_flush(AVCodecContext *avctx){
     s->pp_time=0;
 }
 
-static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s,
-                                   int16_t *block, int n, int qscale)
-{
-    int i, level, nCoeffs;
-    const uint16_t *quant_matrix;
-
-    nCoeffs= s->block_last_index[n];
-
-    if (n < 4)
-        block[0] = block[0] * s->y_dc_scale;
-    else
-        block[0] = block[0] * s->c_dc_scale;
-    /* XXX: only mpeg1 */
-    quant_matrix = s->intra_matrix;
-    for(i=1;i<=nCoeffs;i++) {
-        int j= s->intra_scantable.permutated[i];
-        level = block[j];
-        if (level) {
-            if (level < 0) {
-                level = -level;
-                level = (int)(level * qscale * quant_matrix[j]) >> 3;
-                level = (level - 1) | 1;
-                level = -level;
-            } else {
-                level = (int)(level * qscale * quant_matrix[j]) >> 3;
-                level = (level - 1) | 1;
-            }
-            block[j] = level;
-        }
-    }
-}
-
-static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s,
-                                   int16_t *block, int n, int qscale)
-{
-    int i, level, nCoeffs;
-    const uint16_t *quant_matrix;
-
-    nCoeffs= s->block_last_index[n];
-
-    quant_matrix = s->inter_matrix;
-    for(i=0; i<=nCoeffs; i++) {
-        int j= s->intra_scantable.permutated[i];
-        level = block[j];
-        if (level) {
-            if (level < 0) {
-                level = -level;
-                level = (((level << 1) + 1) * qscale *
-                         ((int) (quant_matrix[j]))) >> 4;
-                level = (level - 1) | 1;
-                level = -level;
-            } else {
-                level = (((level << 1) + 1) * qscale *
-                         ((int) (quant_matrix[j]))) >> 4;
-                level = (level - 1) | 1;
-            }
-            block[j] = level;
-        }
-    }
-}
-
-static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s,
-                                   int16_t *block, int n, int qscale)
-{
-    int i, level, nCoeffs;
-    const uint16_t *quant_matrix;
-
-    if(s->alternate_scan) nCoeffs= 63;
-    else nCoeffs= s->block_last_index[n];
-
-    if (n < 4)
-        block[0] = block[0] * s->y_dc_scale;
-    else
-        block[0] = block[0] * s->c_dc_scale;
-    quant_matrix = s->intra_matrix;
-    for(i=1;i<=nCoeffs;i++) {
-        int j= s->intra_scantable.permutated[i];
-        level = block[j];
-        if (level) {
-            if (level < 0) {
-                level = -level;
-                level = (int)(level * qscale * quant_matrix[j]) >> 3;
-                level = -level;
-            } else {
-                level = (int)(level * qscale * quant_matrix[j]) >> 3;
-            }
-            block[j] = level;
-        }
-    }
-}
-
-static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s,
-                                   int16_t *block, int n, int qscale)
-{
-    int i, level, nCoeffs;
-    const uint16_t *quant_matrix;
-    int sum=-1;
-
-    if(s->alternate_scan) nCoeffs= 63;
-    else nCoeffs= s->block_last_index[n];
-
-    if (n < 4)
-        block[0] = block[0] * s->y_dc_scale;
-    else
-        block[0] = block[0] * s->c_dc_scale;
-    quant_matrix = s->intra_matrix;
-    for(i=1;i<=nCoeffs;i++) {
-        int j= s->intra_scantable.permutated[i];
-        level = block[j];
-        if (level) {
-            if (level < 0) {
-                level = -level;
-                level = (int)(level * qscale * quant_matrix[j]) >> 3;
-                level = -level;
-            } else {
-                level = (int)(level * qscale * quant_matrix[j]) >> 3;
-            }
-            block[j] = level;
-            sum+=level;
-        }
-    }
-    block[63]^=sum&1;
-}
-
-static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s,
-                                   int16_t *block, int n, int qscale)
-{
-    int i, level, nCoeffs;
-    const uint16_t *quant_matrix;
-    int sum=-1;
-
-    if(s->alternate_scan) nCoeffs= 63;
-    else nCoeffs= s->block_last_index[n];
-
-    quant_matrix = s->inter_matrix;
-    for(i=0; i<=nCoeffs; i++) {
-        int j= s->intra_scantable.permutated[i];
-        level = block[j];
-        if (level) {
-            if (level < 0) {
-                level = -level;
-                level = (((level << 1) + 1) * qscale *
-                         ((int) (quant_matrix[j]))) >> 4;
-                level = -level;
-            } else {
-                level = (((level << 1) + 1) * qscale *
-                         ((int) (quant_matrix[j]))) >> 4;
-            }
-            block[j] = level;
-            sum+=level;
-        }
-    }
-    block[63]^=sum&1;
-}
-
-static void dct_unquantize_h263_intra_c(MpegEncContext *s,
-                                  int16_t *block, int n, int qscale)
-{
-    int i, level, qmul, qadd;
-    int nCoeffs;
-
-    assert(s->block_last_index[n]>=0);
-
-    qmul = qscale << 1;
-
-    if (!s->h263_aic) {
-        if (n < 4)
-            block[0] = block[0] * s->y_dc_scale;
-        else
-            block[0] = block[0] * s->c_dc_scale;
-        qadd = (qscale - 1) | 1;
-    }else{
-        qadd = 0;
-    }
-    if(s->ac_pred)
-        nCoeffs=63;
-    else
-        nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
-
-    for(i=1; i<=nCoeffs; i++) {
-        level = block[i];
-        if (level) {
-            if (level < 0) {
-                level = level * qmul - qadd;
-            } else {
-                level = level * qmul + qadd;
-            }
-            block[i] = level;
-        }
-    }
-}
-
-static void dct_unquantize_h263_inter_c(MpegEncContext *s,
-                                  int16_t *block, int n, int qscale)
-{
-    int i, level, qmul, qadd;
-    int nCoeffs;
-
-    assert(s->block_last_index[n]>=0);
-
-    qadd = (qscale - 1) | 1;
-    qmul = qscale << 1;
-
-    nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
-
-    for(i=0; i<=nCoeffs; i++) {
-        level = block[i];
-        if (level) {
-            if (level < 0) {
-                level = level * qmul - qadd;
-            } else {
-                level = level * qmul + qadd;
-            }
-            block[i] = level;
-        }
-    }
-}
-
 /**
  * set qscale and update qscale dependent variables.
  */
-- 
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